Magnetic axis measurement of the high precision coil for the High Intensity heavy-ion Accelerator Facility electron cooler

Sha Xiaoping; Mao Lijun; Lu Haijiao; Yang Xiaodong; Yang Yanbing; Tang Meitang; Zhao Lixia; Ma Fu; Ma Xiaoming; Li Jie; He Lun; Sun Xiaolong

doi:10.11884/HPLPB202133.210073

Volume 33 Issue 8

Aug. 2021

Turn off MathJax

Article Contents

Article Navigation > High Power Laser and Particle Beams > 2021 > 33(8): 084001

Sha Xiaoping, Mao Lijun, Lu Haijiao, et al. Magnetic axis measurement of the high precision coil for the High Intensity heavy-ion Accelerator Facility electron cooler[J]. High Power Laser and Particle Beams, 2021, 33: 084001. doi: 10.11884/HPLPB202133.210073

Citation:

Sha Xiaoping, Mao Lijun, Lu Haijiao, et al. Magnetic axis measurement of the high precision coil for the High Intensity heavy-ion Accelerator Facility electron cooler[J]. High Power Laser and Particle Beams, 2021, 33: 084001. doi: 10.11884/HPLPB202133.210073

Citation:

PDF( 1523 KB)

Magnetic axis measurement of the high precision coil for the High Intensity heavy-ion Accelerator Facility electron cooler

doi: 10.11884/HPLPB202133.210073

Sha Xiaoping^{1, 2
,},
Mao Lijun^{1
,
,},
Lu Haijiao¹,
Yang Xiaodong¹,
Yang Yanbing^{1, 2},
Tang Meitang^{1, 2},
Zhao Lixia¹,
Ma Fu^{1, 2},
Ma Xiaoming¹,
Li Jie¹,
He Lun¹,
Sun Xiaolong¹

1.
Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
2.
School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100039, China

Received Date: 2021-03-08
Rev Recd Date: 2021-06-18

Available Online: 2021-07-21

Publish Date: 2021-08-15

Abstract

Abstract

Electron cooling method is used for the High Intensity heavy-ion Accelerator Facility (HIAF), in order to reduce the beam emittance and momentum spread of heavy ion beams, hence to improve the accuracy and luminosity of nuclear physics and atomic physics experiments. The magnetic field homogeneity of the cooling section is the key parameter related to the cooling effect. A new type of cooling section solenoid composed of several coils was used in the HIAF electron cooling device to produce a high parallelism magnetic field. In this paper, a device for the magnetic field axis measurement of high-precision coils is presented. The geometric symmetrical axis of the coil is measured by a positioning device. The radial and axial magnetic field distribution in the center plane of the coil is measured by the rotating Hall probes. Finally, the relative angle between the coil magnetic field axis and the geometric symmetrical axis is calculated by the measurement results. The accuracy of the measured angle is within ±0.10 mrad. The measured angle of the prototype coil is (1.28±0.10) mrad, which satisfies the physics requirement.
- electron cooling,
- longitudinal magnetic field,
- magnetic field measurement,
- magnetic field axis,
- heavy-ion accelerator

FullText(HTML)

References(11)

References

[1]	Yang Jiancheng, Xia Jiawen, Xiao Guoqing, et al. High intensity Heavy Ion Accelerator Facility (HIAF) in China[J]. Nuclear Instruments and Methods in Physics Research B, 2013, 317: 263-265. doi: 10.1016/j.nimb.2013.08.046
[2]	Mao Lijun Li Jie, LuHaijiao, et al. The electron cooling system for HIAF project in China[C]//Proc of COOL’2019. 2019: 15-17.
[3]	SchmoKller T, Zwicknagel G, Toepffer C. Numerical simulaion of the adiabatic acceleration of electron beams[J]. Nuclear Instruments and Methods in Physics Research, 2000, A441: 50-53.
[4]	杨晓东, 何源, 赵红卫, 等. HIRFL-CSR电子冷却装置高精度螺线管线圈制作及磁场测量[J]. 强激光与粒子束, 2001, 13(5):649-652. (Yang Xiaodong, He Yuan, Zhao Hongwei, et al. Manufacture and magnetic field measurement of high precision solenoid coils for HIRFL-CSR electron cooling device[J]. High Power Laser and Particle Beams, 2001, 13(5): 649-652
[5]	Bocharov V N, Bublei A V, Konstantinov S G, et al. Precision measurements and compensation for the transverse components of the solenoids’ magnetic field[J]. Instruments and Experimental Techniques, 2005, 48: 772-779. doi: 10.1007/s10786-005-0139-2
[6]	杨晓东, Parkhomchuk V V. HIRFL—CSR实验环电子冷却装置参数优化[J]. 强激光与粒子束, 2000, 12(6):771-775. (Yang Xiaodong, Parkhomchuk V V. Parameters optimization of HIRFL-CSR experiment ring electron cooling device[J]. High Power Laser and Particle Beams, 2000, 12(6): 771-775
[7]	Parkhomchuk V V, Skrinsky A N. Electron cooling: 35 years of development[J]. Physics-Uspekhi, 2000, 43(5): 433-452. doi: 10.1070/PU2000v043n05ABEH000741
[8]	Tranquille D, Joergensen L V, Luckin D, et al. The CERN-ELENA electron cooler magnetic system[C]//9th International Particle Accelerator Conference. 2018: 842-845.
[9]	冒立军, 杨晓东, 李杰, 等. HIRFL-CSR实验环电子冷却装置磁场测量[J]. 强激光与粒子束, 2005, 17(7):1106-1110. (Mao Lijun, Yang Xiaodong, Li Jie, et al. Magnetic field measurement of HIRFL-CSR experimental ring electron cooling device[J]. High Power Laser and Particle Beams, 2005, 17(7): 1106-1110
[10]	Bocharov V, Bubley A, Konstantinov S, et al. Precise measurements of a magnetic field at the solenoids for low energy coolers[C]//AIP Conference Proceedings. 2006.
[11]	Antokhin E I, Bocharov V N, Bubley A V, et al. Conceptial project of an electron cooling system at an energy electrons of 350 keV[J]. Nucl Instr & Meth in Phys Res, 2000, A441: 87-91.